How can the ocean floor be created and/or destroyed? To receive all points, explain how the ocean floor is created AND how it is destroyed. Be sure to use the terms mid-ocean ridge, magma, trench, and subduction correctly.

Polar bears give birth and hunt on sea ice. which of the following would polar bears survive during the melting of arctic ice? growing another layer of fur during summer migrate inland to search for different food sources staying put until the ice refreezes sticking to the usual diet of seals